Sparking igniter-gear for explosive-engines.



No. 794,826. PATENTED JULY 18, 1905.

E( WESTMAN.

SPARKING IGNITER GEAR POR EXPLOSIVE ENGINES.

AFPLIOATION FILED APB..18,1904.

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No. 794,826. lMATENTED JULY 18,1905 E. WESTMAN.

SPARKING IGNITER GEAR. FOR EXPLOSIVB ENGqINllS.

yAPPLIATION FILED APB.18,1904. i

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SPARKING IGNITER GEAR'EOR EXPLOSIVE ENGINES.

APPLICATION FILED ABR. 18,1904.

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UNITED STATES Patented July 18, 1905.

PATENT OEETCE. s

EMIL WESTMAN, 4OE MINNEAPOLIS, MINNESOTA, ASSIGNOR TO THE ENTERPRISEMACHINE COMPANY, OF MINNEAPOLIS, MINNESOTA,

A OOPARTNERSHIP.

SPARKING lGNlTER-GEAR FOR EXPLOSlVE-ENGlNES.

SPECIFICATION forming part of Letters Patent No. 794,826, dated July 18,1905.

Application iiled April 18. 1904. Serial No. 203,578.

To all whom, it may 0071.067171,.-

' Beit known that I, EMIL WEsTMAN, a citizen of the UnitedStates,-residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new andusefulImprovements in SparkingIgniter-Gear for Explosive-Engines; and I do hereby declare thefollowing to be a full, clear, and exact description of' the invention,such as Will enable others skilled in the art towhich it appertains tomake and use the same.

My invention relates to explosive-engines, and has for its object toprovide certain improvements in the igniting-gear with a view ofsecuring increased eiciency; and to this end my invention consists ofthe novel devices and combinations of devices hereinafter described, anddefined in the claims.

The invention is illustrated in the accompanying drawings, wherein-Figure 1 is a View in end elevation with some parts broken away andothers removed, showing my invention as applied to a double or twocylinder engine of the four-cycle type. Fig. 2 is a view of the sameparts shown in Fig. 1 in side elevation, some parts being broken awayand others removed. Fig. 3 is a detail in end elevation similar to Fig.1, but with the parts shown in a dierent position. Fig. 4 is an enlargeddetail of some of the parts shown in Fig. 3, and Fig. 5 is a detailshowing the upper end of the trip-rod with the tripping-nose removedtherefrom.

The engine being of the well-known fourcycle type, it will not benecessary to give a detail description thereof', but will be suiificientto note the parts to which my improvements are applied.

The numeral 1 represents the main enginecasting; 2, the crank-shaft; 3,the gear thereon in mesh with the larger gear 4 on the counter-shaft 5for communicating motion to said shaft at the ratio ofone to two fromthe engine-shaft. The said counter-shaft 5 is provided with cams 6,operative on the outer ends of the spring-seated exhaust-valve rods 7for positively opening the exhaustvalves in the usual way. The shaft 5is also provided with crank-disks 8, to the pins of which the lower endsof the trip-rods 9 are pivotally attached in the usual manner. The saidtriprods 9 are provided at their upper ends with tripping-noses 10 foraction on the springheld movable arm 11 of' the movable electrodes. Saidtrip-rod 9 is provided with. a swivel-bolt 12, to the head of which isfixed a short guide-rod 13, working in guide-keepers 14, formed on orfixed to the engine-casting 1. The tripping nose-piece 10 is pivoted tothe upper end of the trip-rod 9 by a nutted stud-bolt 15, workingthrough an elongated slot 16, formed in the upper end portion of thetrip-rod, as best shown in Figs. 4 and 5. The head portion of thetrip-rod is also re.- cessed, as shown at 17 in Fig. 5, and thenosepiece 10 is provided with a stop-lug 18 working in the said recessto limit the pivotal motion of the nose-piece on the trip-rod. A spring19 is fixed to the trip-rod and bears at its free end against the backof the pivoted tripping-nose a'nd tends to hold the nose in its forwardor most projecting position toward the movable electrode-arm 11. F romthis construction it will be seen that the tripping-nose 10 isadjustable lengthwise of the tripping-rod and is at all times free forpivotal motion thereon against the tension of its holding-spring 19. Alink 20, attached to the pivot-bolt 15 of the nose-piece 10, connectsthe same with the upper arm of a bellcrank 21, which is pivoted on theswivel-bolt 12. The lower arm of the bell-crank 21 is connected by alink 22 to the lower end of a hand-lever 23,' fixed to a rock-shaft 24,which is mounted in suitable bearings 25, fixed to the engine-casting.The hand-lever 23 moves over a suitable friction-lock segment 26 and isprovided with a stiff springclip 27, cooperating therewith to hold thehand-lever and the parts connected therewith in any desired setposition. The rockshaft 24 is of sufiicient length to extend across infront of all the igniting devices of the several engines and is providedwith a crankarm 28 corresponding to the lower end or arm of' thehand-lever 23, and each connected by l ulation and setting of thehand-lever 23.

a corresponding link 22 with the lower arm of the correspondingbell-crank lever 21, which forms a part of the toggle-lever connectionto the tripping-nose l0. With this construction it is obvious that thetripping-nose 10 may be moved lengthwise of the rod 9 and be heldin anydesired adjustment by the proper manipt is equally obvious 4that all thetripping-noses on the several different trip-rods for the severaldierent engines may be manipulated and properly set by the singlehand-lever 23, rock-shaft 24, and th'e connections therefrom. Inwhatever position the tripping-nose 10 may be set in its longitudinaladjustment on the trip-rod 9 it will always be free for its limitedpivotal motion against the tension of its retracting spring 19 for theproper cooperation with the spring-held movable electrod e-arm 1l of theelectrodes. Hence it follows that by the manipulation of the hand-le ver23 the tripping-noses 10 in the actuatinggears for all the igniters maybe properly set to var v the timing of ignition, as required to make thenecessary changes in the time thereof for starting and when running atfull speed and for regulating the speed of the engine. In practice Ibuilt double-cylinder units and attach as many thereof to a commonengineshaft as may be required for the power desired. The cranks foreach double-cylinder unit are located o-ne hundred and eighty degreesapart. The cams 6 for operating the exhaust-valves and the crank-disks 8for operating the igniter-gears must of course be properly positioned orset in respect to the cranks and each other for the respective requiredactions therefrom.

By actual usage I have demonstrated the efhciency of the devices hereindisclosed and claimed for the purposes had in view. I have shown myinvention as applied to an electric igniter; but it will of course beunderstood that in the broad point of view the same might be applied aspart of the operating-gear for any other suitable form of igniter.

It will further be understood that the details of the construction mightbe modified and varied to a considerable extent without departing fromthe principle of the invention.

What I claim,'and desire to secure by Letters Patent of the UnitedStates, is as follows:

l. In an explosive-engine, the combination with a pair of electrodes,one of which is movable, of means for operating said movable elec-vtrode, comprising a reciprocating rod, a longitudinally-adjustabletripping-nose on said rod, a set-lever adj ustably mounted on a fixedsupport, and connections between said lever and said tripping-nose,permitting the free movements of said rod, and serving to transmitlongitudinal adjustments to said nose while the engine is in action, andwithout changing the movement of said rod, substantially as described.

2. In an explosive-engine, the combination with a fixed and a movableelectrode, of means for operating said movable electrode comprising areciprocating trip-rod, having an adj ustable tripping-nose, atoggle-lever carried by said trip-rod and connected to saidtrippingnose, a hand-lever adjustable on a fixed support, and aconnection between said hand-lever and said toggle lever, substantiallyas described.

3. The combination with a plurality of eX- plosive-engines,having fixedand movable electrodes, of means for operating said movable electrodesconsisting of trip-rods, having adjustable tripping-noses, toggle-leversconnecting all of said tripping-noses to a common rockshaft, and ahand-lever on said rock-shaft movable over a lock-segment, for settingall of said tripping-noses in any desired adjustment on their respectivetripping-rods, substantially as and for the purposes set forth.

In testimony whereof I aiiix my signature in presence of two witnesses.

EMIL WESTMAN.

Witnesses:

JAS. F. WILLIAMSON, F. I). MERCHANT.

